Chapter 8: Cell Structure & Function

According to cell theory, all ​ (a)   are made of ​cells, cells are the smallest units of life, and all cells come from other ​ (b)   .

• living things

• cells

Answer explanation

According to cell theory, all living things are made of cells, cells are the smallest units of life, and all cells come from other cells.

Tags

NGSS.MS-LS1-1

Select all that apply: Which of the following types of cells have a nucleus?

• bacteria

• Viruses

• prokaryotes

• eukaryotes

Answer explanation

Eukaryotes have a nucleus, while bacteria, viruses, and prokaryotes do not. Therefore, the correct choice is eukaryotes.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Where do cells come from?

• other cells

• the air

• water

• outer space

Answer explanation

Cells come from other cells through the process of cell division, where a parent cell divides to produce two daughter cells with identical genetic material.

Tags

NGSS.MS-LS1-1

Who discovered and named cells? 

• Captain Hook

• Robert Hooke

• Zacharias Janssen

• Rudolf Virchow

Answer explanation

Robert Hooke discovered and named cells. He observed cork under a microscope and coined the term 'cell' in 1665.

Which of the following controls movement of materials in and out of a cell? 

• Cell wall

• Cell membrane

• Cytoplasm

• Nucleus

Answer explanation

The cell membrane controls movement of materials in and out of a cell, making it the correct choice among the options provided.

Tags

NGSS.MS-LS1-2

The jellylike substance that contains proteins, nucleic acids, minerals, ions, and organelles is what?

• Prokaryote

• Nucleus

• Cytoplasm

• Eukaryote

Answer explanation

The correct answer is Cytoplasm because it is the jellylike substance that contains proteins, nucleic acids, minerals, ions, and organelles.

Tags

NGSS.MS-LS1-2

The ___ is the basic unit of sturucture and function of organisms

• atom

• cell

• matter

• all other answers are correct

Answer explanation

The correct choice is 'cell' as it is the basic unit of structure and function of organisms.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

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The Cell Theory states...

• atoms create all matter

• living things evolve

• the cell is the backbone of all matter

• cells are the basic unit of structure and organization of organisms

Answer explanation

The Cell Theory states that cells are the basic unit of structure and organization of organisms.

Tags

NGSS.MS-LS1-1

Unlike eukaryotes, prokaryotes do not have:

• DNA

• cytoplasm

• cell walls

• a membrane bound nucleus

Answer explanation

Prokaryotes do not have a membrane-bound nucleus, unlike eukaryotes which do. This is the key difference between the two types of cells.

Tags

NGSS.MS-LS4-2

DNA is found in the nucleus

• Prokaryote

• Eukaryote

Answer explanation

DNA is found in the nucleus of eukaryotic cells, making the correct answer choice Eukaryote.